Blast-furnace.



Patented Sept. 30

G. C. SHAGKLEFORD.

BLAST FURNACE. (Application filed June 14, 1902.)

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GIBBON C. SHACKLEFORD, OF ALLEGHEN Y, PENNSYLVANIA.

BLAST=FURNAGE.'

SPECIFICATION forming part of Letters Patent No. 710,120, dated September 30, 1902.

Application filed June 14-. 1902- Serial No. 111,759. Clio model.) I

To all whom, it may concern:

Be it known that I, GIBBON C. SHACKLE- FORD, a citizen of the United States, residing at Allegheny, in the'county of Allegheny and State of Pennsylvania, have invented or discovered certain newand useful Improvements into is collected and retained and then discharged centrally upon the apex of the bell, so as to be evenly distributed around the latter and by the latter into the furnace when the bell is lowered. Different forms of doors or closing devices for the feed-hopper have been employed with varying success; but objection has been made to the use of doors in this connection on account of the difficulty in operating the same.

The invention described herein relates to certain improvements in the arrangement of doors for the feed-hopper and in means wherebythe same may be operated and a full discharge area between the feed-hopper and bell may be attained.

The invention. is hereinafter more fully de scribed and claimed.

In the accompanying drawings, forming a.

the upper part of a blast-furnace having my improvements applied thereto. Fig. 2 is a sectional plan view. Fig. 3 is a sectional view on a plane indicated by the line Ill Ill, Fig. 2, ofadjacent portions of the feed-hop.- per and bell-chamber. Figs. 4 and 5 are views similar to Figs. 2 and 3, illustrating-a modification of my improvement. Figs. 6 and 7 are also views similar to Figs. 2and 3, illustrating a further modification of the improvement. Figs. 8 and S) are sectional detail. views, and Figs. 10 and 11 are sectional views illustrating further modifications of my improvement.

In the practice of my invention the feed mechanism, consisting of the ship or inclined way, a car 1 and the connection for operating the same, the bell 2 and its chamber, and the operating mechanism for the hell, are constructed in the usual or any suitable manner. The feed-hopper 3 is supported by the framework on the top of the furnace in any suitable manner, prefer-ably by means of brackets l, secured to a transverse beam of such framework. The feed-hopper 3 is provided at its lower end with a neck 5, having parallel sides adapted to act as a guideway for the ring 6, having sleeve portions '7 and 8, which bear, respectively, upon the neck 5 of the hopper and aneck 9, having parallel sides and formed on the uppe'r end or" the bell-chainoer.v This construction permits of the movement of the carrying-ring 6 along the neck portions of the hopper and bell-- chamber without unsealing the latter. In order to insure a sealing of the bell-chamber,-a shoulder 10 is formed on the sleeve portion 8 and adapted when the ring 6 is lowered to bear on the upper edge of the sleeve 9, thereby forminga tight seal as against the escape of gases. Two ormoredoors 11, adapted to close the -lower end of the hopper when the ring is in normal position, are pivotally mounted upon the ring 6. These doors in the construction shown in Fig, l are held closed when the ring is lowered b means of links 12, pivotally connected to the doors and to lugs formed on the neck portion 9 of the bell chamber. When the ring is raised by means of the fluid-pressure cylinder 13 and the lever 14 operated thereby, the doors 11 wili swing or be forced outwardly and assume a vertical position or one parallel or approximately parallel with the neck portion of the feed-hopper and outside'the walls of the same, therebygivinga full opening from the hopper to the bellchamber. When the ring 6 is lowered, the links 1.2 will force the doors to a closed position around the rod supporting the bell. 2. s

In the construction shown in Figs. 2 and 8 the doors 11 are pivotally connected to the lowerend of the feed-hopper, and the links 12 are connected at theirends to the doors l1 and to lugs formed on a ring 6, which is provided with shoulders 23 toliinit the downward movement of the ring. In this construction an auxiliaryguide-neolr. 5 is formed on the lower friction-rollers, as shown.

end of the receiving-hopper. It is preferred that the link 12 should be made adjustable as to length, such adjustability being eifected by any welhknovvn means-.such, for example, as that shown, consisting" of a turnbuckle 15, having right and left hand threads for engaging similarly-threaded ends of sections forming the link 12.

In higsat and 5 the doors ll are pivotally connected to the ring (l,which is constructed substautiallysimilar to that shown in Fig. 1; but in lieu of employing links for closing the doors ll ribs 16, having curved edges, are formed on the back walls of the doors and bear upon abutments 17, formed on iheneclrof the bellchamber and preferably provided with anti- The ribs on the doors and their supporting-abutments on the neck of the bell-chambcrare so proportioned and constructed, as shown in Figs. -1- and 5, that when the ring 6 is lowered the doors will be forced inwardly to a closed position; but when the ring is raised the doors are permit; ted to swing outwardly to a position substantially parallel with the neck of the feed-hopper. In-lieu of employing shoulders to' seal the joint between the ring 6 and the bellchamber a water-sealed joint may be formed by an annular recess 18in the upper end of the bell-chamber for the reception of guiding portion 8 of the ring 6. Suitable inlet and outlet pipes 19 and 19 are employed for maintaining a constantbody of water or other liquid in this annular recess. I.

In Figs. 6 and 7 is shown a construction substantially similar to that shown in Fig. 1, except that the guiding portion 8 of the ring passes outsideof the neck 9 of the bell-cham her and its lower edgesrest upon a shoulder 10, formed on the neck 9.

It is preferred that the lever 14 should be bifurcated at its inner end and provided with bearings for trunnions 20, formed on opposite sides of the ring (3, as shown in Figs. 1 and 2, so that an even and regular movement ofthe ring 6 may be attained. In lieu of making the link 12 adjustable as regards its length its point of connection with the bellchamber may be made adjustable, as shown in Fig. i), such construction consisting of a rod .21, provided with an eye at its inner end and threaded for the reception of adjustingnuts 22, as shown.

As shown in Fig.1. 1U and ll, the ring (3 may be omitted and the desired movement of the doors 11 efiected byshii'tingcithcr the feedhopper3,as shown in Fig. 10,0r the upper portion 23 of the bell-hoppcr,'ns shown in Fig.

11. In the construction shown in Fig. 10 the feed-hopper 3 is supported and shifted by the lever ii, the bifurcated arms of this latter" engaging the trunnions 20. which are secured to the sides of the'feed-hopper, as shown,

In this construction the neck 5* of the feed hopper moves along and is guided by the neck 9 of the bell-hopper and bears, when lowered to close the doors, on the shoulder 10011 the neck i). The feed-hopper is laterally supported and guided in its movements by brackets r, secured to the frame on the furliace.

In the construction shown in Fig. 151 the upper portion 23 is made vertically movable and is guided in such movement bytheueclr 5 of the feed-hopper (which is securcd'to the frame on the furnace by brackets '1) and by :a neck 2i on the'lower portion 25 of the belL hopper. The movement of the portion 23 is efiected by the lever 14, which engages truunions 20" on the portion 23 of the belLhopper- In both constructions the doors 11 are pivoted on the feed-hopper and the outer ends of the links 12 to the bell-hopper.

It is characteristic of the improvement described herein that the movement of the closing doors is eifected by means of a movable member or ring interposed between the feedhopper and bell and suitable interposed connections,whereby on a vertical movement of such movable member the doors are forced to a closed position and by its movement in an opposite direction the doors will swing open, such movement being effected either through a directpull on the doors or by reason ofg'ravity, or both.

I claim herein as my invention-- I 1. A "blast-furnace having 1n combination I a feed-hopper, a bell-chamber, doors,:ar-

ranged between the hopper and chamber,'.

meansfor closing said doors,the closingmeans and the doors beingca-rried by suitable independent supports movable relative one to the other to close the doors, substantially as set forth. l

2. A blast-furnacmhaving in combination,

a feed-hopper, a bell-chamber, doors arranged between the hopper and bell-chamber,

a movable ring, means for closing the doors operative on the shifting of the ring, substantially as set forth.

A blast-furnace, having in combination, a feed-hopper,a bell-chamber,a movable ring, doors pivotally connected to said ring and adapted to close the feed-hopper, and links having their ends pivotally connected to the doors and the bell-chamber, substantially as set forth. I

In testimony whereof I have hereunto set my hand.

' GUJBON O. SI-IAOKLEFORD. lVitnesses:

DARWIN S. WoLoorT,

. I I, M. CoRwIN. 

